Pull-socket.



H. RSARGENT & T. K001i, PULL SOCKET.

APPLICATION FILED JULYB. 1912.

1,122,031. Patented Dec. 22, 191 4.

W't Q Inventors 1 esses: 1 I 2% I Ward RSar ent, 4% V 9/ heodore K06 I 1 v I Their fit'borneg.

nowann n. sanonm AND ASSIGNOJRS '10 GENERAL YORK.

THEODORE KO H, 0 ELECT O A Y, A CO I RATIO 0F N scnnilrncmnz, NEW YonK Penn-soothe.

Specification of Letters Patent.

Paton 1; co. $2, 391%;

a ueamn filed July s, 1912. semi No. zoasesand closed by a movable part actuated by p l g a c ain or other flexibl @XlFQ LS O r m the socket- The object of the present invention is to provide a pull socket which shall be more su stantial and du able and less liable to get ou of o derthan de ices heretofore m use.

For a more complete unde standing of the invention, pcferencc may be had to the accompanyi g drawing showing one cmbodimerit of our invention, in which Figure l is a side elevation ofthe socket i fi O ll 51 6 1; F ,ig- 2 is a vertical section; ig- 3 i it View taken at right angles to g- With Phlts shown in section; Fig, 4 is t d tached View ins segment, and vspimlle; Fig. 5 is .a top plan view of the lower insulating base and stationary contacts-g Fig. 6 is a plan of the g. 7 is a perspcdtive view of the chain hell connected to the supporting bracket; and Fig. 8 is a similar View of the bell detaehed- As shown in the drawing, two disks 1 and,

Qofinsulatitin, preferably of porcelain, are supported in fixed relation by metallic brackets 3, l and 5 which are connected by screws passing through the insulating disks and engaging the be t ends of the bracke s T he lower surface of the lowerdisk 2 are attached a screw shell .6 for receiving the ordinary lamp base and having an inturned flange resting against the surface of the disk and held thereto by screws 7 and ,8 and a center contact 9 in the form of a flexible finger clamped against the lower surface of the disk 2 by .a screw 10 engaging the lower end of the bracket 4 which; is provided with a binding screw 11 for securing one of the circuit wires. The other circuit wire is attached hymcans of a screw 12 formed .2, as shown in of t e pol pie e, a ua rod carried by the bracket 5 which is connected to a stationar contact 13 through a gmwardly-exten' lug foot therefrom which is clamped bet een the i turned end of the bracket 5 and the upper surface of the disk 2 by t'he screw which secures bracket 5 to the disk.

The uppe surface of the lo er disk 2 has there n, half way between its center and periphery, two'segmental inclined surfaces 1 and .15, and between them are open spaces i ich are disposed the stationary contacts 13 and 1.6. ,he contacts 13 and l have their e gaging surfaces disposed at an angle to th surface of the se eral surfaces form a series of hills and valleys. The stationary contact 16 has a' f ot .1 formed by an inte ral 111g from the inner edge, ent downwardly and outwardly and secured by the screw 8 which engages a nut and clamps the foot between it and the upper surface of the disk Fig. 3, and through which the contact is electrically connected to the screw shell 6. -At the center of the bearing chamber 18 extension 19 forming between them a shoulder on which is seated a thrust disk 20. he upper insulating disk 1 has accntral aperture 22 extending therethrough and enlarged to form a shoulder '23, immediately the disk similar to disk 2 is formed a in line of surfaces 14 and 15 sothat th v part extendbelow which the walls 24 are formed polyg-- onally for a short distance, while below the with a cylindrical wall 25.

The spindle 26 consists of a cylindrical with a polygonal head at its upper end. This head is pierced to receive one end of a helical spring Hand is also provided with a transverse slot 28 for the reception of a screwdriver. The lower end of the spindle 26 extends through an aperture in the thrust plate 20 while the head normally rests in engagement with the shoulder 23 in the uppcr'disk l and is held from turning by the polygonal walls as. v

On the spindle26 are loosely mounted a pole piece 29 and the actuatin' g segment 30. The polepiecs consists of a disk of metal,

such as brass orphosphor bronze, with segmental a tmS 31 punched therefrom and heat downwardly and with ratchet shoulders 32 punched therein. In. order to provide a substantial bearing for the pole piece on the spindle, the pole piece is provided with an extended sleeve 33 extending through its center and swaged over at its upper end. The actuating segment consists of a triangular plate 34 provided at its center with an extended bearing sleeve 35 and on opposite sides of its center with ratchet teeth 36 adapted to engage the ratchet shoulders or notches 32 01. the pole piece.

Near the outer edge of the segment isattached the chain barrel 37 consisting of a single piece of metal with a peripheral flange or barrel extended downwardly.

therefrom and a main portion overlying the triangular plate 34 and connected thereto by means of insulating disks or plates 38 and'hollow rivets 39 extending through the insulation, the main portion of the chain barrel, and the triangular plate. This connection affords a thoroughly insulated bara 13 and le-"upp only Qfrictiol rel for the chain with the insulation positively clamped between metal parts so that it is relieved of mechanical stresses and will ;chain 41 overlies the outer periphery of the barrel 3'? and asses out through a guide .li-ell 44.

Theguide bell is detachably connected to the bracket 3'in order that it may be re- 40 :moved in case of necessity, and in order to provide arigid detachable connection the bracket 3 has a transverse lug 45 struck up from its foot and at its upper end it is formed U-shaped with a depending lug 46 V spaced from the main portion of the bracket .a certain distance. The bell is provided with a hooked finger 47 forming therewith a parallel sided recess adapted to receive the lug 45, while at. its upper side the bell is provided withtwo flexible legs 48 having out-turnedQfeelrwith rounded ends adapted to be sp un ,between the main'portion of the 'bracket;,fand its upper lug- 46.

It-will be'ob sprvedzthat the pole piece 29 is maintained 1ii, }a plane-at right angles to the spindle by reason of'its bearing sleeve. 33, and its arrnsfil, are positively positioned for engagement ith the stationary contacts passing beyond the inclined 15, so that substantially the toioppose the motion of the rolepie'ces'that between the arms 31 and the stationary contacts or the inclined surfaces of the disk 2. It will also be observed that the actuating segment is positively carried in fixed relation to the pole piece by reason of its long bearing on the spindle 26, and the only friction between the actuator and the pole piece is due to the ratchet teeth an abundance of resiliency so that danger.

of its becoming fatigued and broken in service is entirely avoided.

We do not desire to restrict ourselves to the particular form or arrangement of parts herein shown and described, since it is apparent that they may be changed or modified within the scope of our claims without departing from our invention.

What we claim as new and desire to secure by Letters Patent of the United States, 1s:

1. In a pull sodket, the combination of two insulating disks, a thrust plate carried by one of said disks, a spindle supported by said disks, a rotary pole piece mounted on said spindle and having an extended hearing engaging at one end with said thrust plate, an actuating segment having an extended bearing on said spindle and ratchet means for engaging said pole piece, and a springfor retracting said actuator and urging it toward said pole piece.

2. In a pull socket, the combination of two insulating disks in one of which is formed an aperture with polygonal walls, a thrust plate carried by the other disk, a spindle aving an end extending through said thrust plate and a polygonal head disposed in said aperture, a pole piece mounted on said spindle and engaging said thrust plate, an actuating segment mounted on said spindle between the pole piece and the head thereof, and ahelical spring between the head of the spindle and said actuating segment operating to maintain the position of the spindle and to retract said actuating segment.

3. In a pull socket, the combination of a spindle, a pole piece, and an actuating segment comprising a metal ratchet plate for engaging said pole piece and a flanged metal chain barrel overlying said ratchetplate, and insulating rivet means whereby the last mentioned parts are secured toat one end and made U s aped at the other end, and. a chain bell having at one side a transversely extended finger and at the other two spring legs In a pull switch device, the combination of a bracket having parallel sided transverse lug at one end and made U shaped at the other end, and a detachable chain bell having at one side a transversely extended finger forming a parallel sided 10 slot for the reception of said lug. and at copies of this patent may be obtained for five cents each, by addressing the Cominissioner of Patents.

. THEODORE KOCH. Witnesses BENJAMIN B. HULL,

HELEN ORFORD.

Washington, D. 0." 

